Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5319520 | Electronic equipment assembly of tiered type | Akira Sugiyama, Tsutomu Hoshino | 1994-06-07 |
| 5185791 | Combination desk and wall telephone set | Katsumi Itoyama, Akira Sugiyama | 1993-02-09 |
| 4924044 | Light emitting push button switch for an electronic apparatus | Yoshiya Takahashi, Katumi Itoyama | 1990-05-08 |
| 4803724 | Hand set | Yoshihiro Utoh | 1989-02-07 |